Remove --enable-gpu-service-logging and --enable-gpu-client-logging

Remove --enable-gpu-service-logging and --enable-gpu-client-logging

This removes hundreds of lines of code, thousands of lines of generated
code (the generated gl bindings files are only about half as large after this
change), and reduced binary size by 20kB.

The command buffer code doesn't change much any more. People who need
logging for debugging can add some locally.

BUG=322805

[piman, 2013-12-03 01:01:47]

I do appreciate the reduced binary size... However this code has been used in
the past to debug issues - the point being that it logs *everything*, which you
kinda need to do to debug GL state (since it's not directly accessible). It's
not so much about logging/debugging the command buffer stuff, but helping to
debug gl clients.
How about making it debug-only, so that we still get the binary reduction?